+(TargetMouseBtn*) unstringifyImpl: (NSArray*) comps {
NSParameterAssert([comps count] == 2);
TargetMouseBtn* target = [[TargetMouseBtn alloc] init];
+(TargetMouseBtn*) unstringifyImpl: (NSArray*) comps {
NSParameterAssert([comps count] == 2);
TargetMouseBtn* target = [[TargetMouseBtn alloc] init];